monroe



A(No Moden) E; P. MONROE.

METALLIC .ROD PACKING.

A INVBNTUR @M am TNESSES f ATTURNBYQS l 2o side of the stufng-box cover.

, UNITED; STATES PATENT OEEIc-E.

'EDWIN `PEAR MONEOE, OENEw-YOEK, n. Y., AssIGNOE To THEIINITEDA sTATEsMETALLIC PACKING COMPANY, OE PHILADELPHIA, PA.

METALLIC Roo PACKING.

in s

`s PEcIEIcl/ITION forming part of Letters Patent No. 293,189, datedFebruary 5, 1884.

' Appucntiontimi october e, 18er. (No maar To all whom it may concern:

Be it known that I, EDWIN PEAR MONROE,

of the city, county, and State of` New York, have invented a new anduseful Improvement 5 in Metallic Rod Packings for Valve and other nRods, of which the following is aspecication. The invention is moreespeciallyadapted to valve-rods for locomotives, and has for its ob-`ject to produce a more simple and readily-ad Io justedpacking than hashitherto beenin use,

\ and which is also self-adjusting to compensate for wear and forirregularities in the move-` ment ofthe rod. l

The invention consists, irst, of` an annular 15 packing-receptacle whichsurrounds the rod,

. and is contained in the stuffing-box. The said u receptacle has azone-shaped or spherical cavity, in which the packing-rings arecontained,

and its Outer face is in contact with the inner A tapering spiral springabuts againstthe packing-rings,

holding them in the socket in their receptacle,

and at the saine time pressing said receptacle snugly against the innerside of the stuffing 2 5 box cover. The inner end ofthe spring abntsagainst a sleeve or support, which surrounds the rod and is insertedinthe end of the valvechest. Said support` has an inner lining of Babbittor other anti-frictional met-al, and the 3o saine material is interposedbetween the stuffihg-box cover and packing-receptacle.

In LettersA Patent Nos. 245,967 and 246,185, granted to me A ugust 23,1881, Ihave shown and described certain features which are en i- 33bodied in my present application. In No. 245,967 is contained theannular packing-re ceptacle bearing against the stuffing-box cover andhaving a zone-shaped socket to receive packingfrings, and also a springfor holding 4o the' rings and their receptacle in place. ySaidspring is,however, short and not tapered, and the bearing at its rear end isdifferently constructed from that shown in my present application. InNo.` 246,185 there is no sepa.- rate moving` 'packing-receptacle, andvarious other dilferences are present, which will be obvious uponinspection.

`In the accompanying drawings, Figure l is `a vertical longitudinalsection of my device. Fig.`2 is atransverse section on the `line x x.

Fig. 3 is a plan and section, and Fig. 4 is also in the device describedin lieu ring.

a plan and section of the two packing-rings,`

respectively, which two rings Iprefcrably use of the sin gie In thedrawings similar letters of reference indicate like parts.

. A represents the end of the valve box or chamber, through which passesthe rod B. In said end isV inserted an annular support, C,

preferably of brass, and provided, as shown,

with a feather, which prevents its rotation in its seat. lining, D, ofBabbitt or other anti-friction metal.

rodwhen the support C is in place in the valve box or chamber, theobject being to pre-v sent a greater amount of metal at the placewherethe most wear occurs. The outer end of the support C is enlargedand a recess, E, is provided therein, which receives and aids in holdingthe lining D.

r 4I? isa spiral spring, made in tapering form. At each end of'saidspring two of the turns are pressed together, so as to lie inA contact.

The said support has an interior.

I have shown this lining as made u thicker at that portion which, liesbeneath the The object of this is to form asolid bearing or abutment ateach end of the spring from the material of and integral with the springitself.

I do not limit myself to the pressing together of but two turns of thecoil` at each end, inasmuch as` this feature will in some measure dependupon the nature of the wire of which the spring is formed, springs whichare of more ilexible construction generally requiring the contact of agreaternuniber than two` coilsto make a solid bearing or abut` I ment.

The outer faces of the last turns of the coils at each end of thespring, whenthe latter is made of round wire, are preferably iiattened,so as to lie in close contact with adjacent parts of the device. Thelarger end of the coiled spring F is placed `in contact with the supportO or with the base of thestufling-box. The

smaller end of the said spring may be provided with a follower, G, asshown. follower comes in contact with and is caused by the expansivetendency of the spring F to` press upon the packing-rings II and I. The

This

IC O

melting-rino' I-I is shown in FiO. 3 and the i 2 29ans ways in contactwiththe rod B; and since the internal bearing-surface of the receptacleJ is of larger diameter at one than at the other end, the packing-rings;when pressed into the same, will quickly and easily be wedged orcontracted by the said surface into closer contact with the rod. In theface of the packing-receptacle J, I form a groove, in which I place aring of Babbitt metal, K. The face thus babbitted comes in cont-act withan opposite face or shoulder of a recess, Il, in the stuffing-box coverM.

I do not limit myself to the speciiic arrange- I ment of theBabbitt-metal ring and packingreceptacle here shown, inasmuch as thesame may be varied withoutdeparting from the purpose or principle of theinvention by inserting the ring .in an annular groove in theV materialof the cover M, in lieu of in the face of the packing-receptacle J, theobject sought being simply the application of the anti-fric tional metalto the two bearingsurfacesnamely, the surface of the packing-receptacleand the surface of the cover, which are in eontact.

The diameter of the recess L in the cover M is greater than the diameterof the packing-receptacleJ to a suflicient extent to enable the latterto have lateral play therein in all directions. The rod B passes throughthe recess L and the apertureN in the cover M. Said aperture is ofgreater diameter than the rod B, so that said rod may have lateral playtherein. It will now be apparent that the packing-receptacle J beingfree to slide on the cover vM `in the recess L, it willfollow the rod Bin any lateral deviation which said rod may take from a right-'linemovement.

The stuffing-box cover I have shown as made in two parts, M and O.XVhile I do not limit myself to this particular arrangement, inasmuchasthe cover might be made in a single piece, instead of being divided,or might consist of the part M only, I consider the construction shownasadvantageous, for the reason that. the insertion ofthe part O enablesthe cover to be conveniently lengthened. The result of this is toseparate widely the packing-rings and the support C, which are the twosurfaces against which the rod bears, so that that part ofthe rod whichreciprocates in the support C does not also move in the packing-rings,and vice versa, and thus the wear is distributed along two portions ofthe length ofthe rod, instead of being received ou one and the sameportion, as otherwise would be the case. I

The parts M and O of the cover are secured to the valve box or chamberby bolts Q, and the part M is provided with an internal brass lining,l?, the function of which is to provide a wearing-surface forcooperation with the periphery of the packing-receptacle J. Around theparts of the cover and between the ianges thereon I place a sheet-ironenvelope or jacket, R, which protects and gives a neat iinis to theexterior of the stuffing-box.

It will be obvious that any lateral deviation of the rod B from aright-line movement cannot impair the tightness of the packing bearingthereupon, for the reason that the packing and the parts in relationtherewith areY capable of automatically adjusting themselves in exactaccordance with the amount of deviation taking place, and this effected,first, by the wearing of the babbitt lining the support C conformably tothe new direction of motion of the rod; second, by the self-adjustmentof the packing-rings through their rocking or turning in their sphericalseat as they follow the rod in its change in `lateral position; and,third, by the self-adjustment of the packingreceptacle J, which alsomoves laterally with the rod. I thus obtain a metallic packing` ofsimple construction which is self-adjusting, and thus preventive ofthelarge waste of steam due to the wear and leakage of other Vforms ofpacking in common use.

I claim as myinventionl. The combination of the valve box or chamber A,rod B, support C, and lining D, substantially as described.

IOO

2. The combination, with the packingsreceptacle 'and the stuiing-boxcover, having bearing-surfaces arranged in juxtaposition, so as to allowofthe sliding of the former upon the latter, of the ring of Babbitt orother anti-frictional metal inserted in the face of the pack--ing-receptacle, so as to move therewith and bear upon the face of thestuffing-box cover, substantially asv described.

3. In a metallic packing for valve or other rods, the combination, withthe packing-rings, of a tapering coiled metallic spring having at eachend two or more of its coils or turns brought in contact, to formabutments or bearings, substantially as described.

4. The combination of the valve box or chamber A, support C, spring F,follower G, packing-rings H I, packing-receptacle J, and covers M O,substantially as described.

In a metallic packing for valve or other rods, the combination of thepacking-reeepta-- cle J and the stuffing-box cover M, provided with thebrass .lining l?, substantially as described. v

EDYVIN PEAB MONROE.

Vitnesses:

GEO. H. BENJAMIN, B. A. FIsKE.

